Tree Rings, Dating and Changing Climates

Environmental change affects tree growth and the changes are captured partly in tree rings. Tree-ring studies are used to support the cause of climate change and many thousands of years of Earth history. But are wide rings caused by warmer temperatures? Is it this simple? Geoff Downes looks at the underpinning science in linking changes in wood structure to changing climate.

Originally, there were 18 DVDs recorded at the 2009 Super Camp (Australia). The DVD's that are still available are listed below. All 18 are still available as downloadable MP4 video files.